I noticed that "The Constant Gardener" is on your to-read list. Although not exactly a medical thriller, it is about the pharmaceutical industry but it's not a light book and it's a little depressing, like many John le Carre books can be.
You may also look up "Ordinary Storms" by William Boyd, also about the pharmaceutical industry.
You may also look up "Ordinary Storms" by William Boyd, also about the pharmaceutical industry.